Evaluación de la vulnerabilidad sísmica de edificaciones de estructuras metálicas de la parroquia La Península, Ambato, Ecuador: Propuesta de reforzamiento estructural de una edificación representativa

Abstract

The parish of La Peninsula in the city of Ambato is located in an area of high seismic hazard in Ecuador. This parameter, together with the vulnerability of the buildings and the level of exposure, represents the level of risk that could occur in the face of these events. Seismic vulnerability is a magnitude that allows quantifying structural damage, failure modes and resistance capacity under the action of an earthquake, based on the characteristics of the building such as the type of structural system, irregularities in the floor plan, elevation, frequency of maintenance, application of regulations, construction codes and other parameters that are controllable, to provide an overview of the degree of vulnerability and seismic risk index of the buildings. The first step was to identify the buildings in which the main component was the metal structure, and from there, with the help of the forms proposed in the FEMA P-154, NEC 15 and FUNVISIS standards, it was finally possible to establish the degree of vulnerability of these buildings. For the interpretation of the results, the NEC 15 and AISC 360 criteria were used because the buildings found in the area were of traditional moment frames. A representative building in the area was selected to evaluate in detail the seismic vulnerability, in this case a linear static and spectral modal analysis was performed,